In other words, even if some wary bosses would see any whistleblowing as a risk factor, the fact is that the large majority of responses she got were positive. People believe her, and people strongly feel she got treated unfairly. She's also, according to many accounts, a talented engineer. Signs for her future employment are very positive.
She also mentioned herself that her current job at Medium is with a very supportive team. (edit: i misunderstood something here)
Once more, none of this is to diminish the understandable concerns with going public with allegations. But in the Ellis case, I think we see that the overall outcome can be quite positive. It's good for the whistleblower, it's good for the tech industry as a whole, it's really just bad only for the small amount of bad people we need to get rid of.